#define ROWS 5 //五行
#define COLS 3 //三列
char keys[ROWS][COLS] = {
  {1,2,3},
  {4,5,6},
  {7,8,9},
  {10,11,12},//* 0 #
  {13,14,15} //g y r
};
byte rowPins[ROWS] = {5,6,7,8,9}; //connect to the row pinouts of the keypad
byte colPins[COLS] = {10,11,12}; //connect to the column pinouts of the keypad
//Create an object of keypad
Keypad keypad = Keypad((char*)(keys), rowPins, colPins, ROWS, COLS );